Edith alice ktall



E. NALL, DECD.

I I3. II. IIALL, EXECUTIIIX. MULTIPLE VULCANIZING PRESS. APPLICATION FILED sEPT.23. IsI. IIEIIEWEDIIILY 11.19I1.

Patent-ed Sept. 16

,T lwI I,IIIIIIIII II ,I -,II MI I III- 3 mm rmirnn STATES PATENT ormcu.

EXECU'JLRIX 0F SAJED EDWARD NALL, DECEASED, ASSIG-NOR TO THE GOODYEAR TIERE AND RUBBER COMPANY, OF AKRON, OHIO, A CORPORATJEON 0F OHIO.

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Application led September 23, 1916, Serial No. 121,784:l Renewed July 17, 1917. serial No. 181,166.

y To all whom t may concern Be it known that ll, EDWARD NALL, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio,

have invented new and useful Improveorganized from a battery of separate ypress elements which are capable of operation in pairs, although the" separate operating elements of each pair of presses may be capable of a diderential movement with respect to each other, in accordance with the requirement of the separate articles to be vulcanized in each.

llt is also an object of this invention-to construct a multiple vulcanizing press in such a manner that a batter of separate fpress elements are capable 0 independent operation against a single fixed head, which does duty. for the entire battery.

lit is an object of equal importance to ar- Y range the various elements of the battery composing my multiple press in such'a manner that they may be commonly fed from a single source of actuating fluid, and may be commonly guided, in their travel against the fixed head and return, by a single guide ele# ment. y

The above and additional objects of a similar nature more specically treated, may be accomplished by such means as are illustrated in the accompanying drawing, described in the following specification and then more particularly pointed out in the claims which are appended hereto and form a part of this application.

' With reference to the drawings, wherein there has been illustrated a preferred embodiment of the invention as it is reduced to proper lengths.

which will be hereinafter practice, and throughout the several views of' which, similar reference numbers designate corresponding parts:

lFigurel is a front elevational view of the compound vulcanizer comprehended by this invention;

lFig. 2is an end view of the multiple vulcanizer; and

Fig. 3 is a transverse sectional View taken through my vulcanizing apparatus on the planes indicated by the brokenlines 3 3 of Fig. l.

lln the vulcanization of articles requiring but short curing periods much time is lost by the operator remaining idle whilel the y article -in the vulcanizer is being cured, prior to the removal of the cured article from the vulcanizer and the substitution of the next article to be cured therein.

Particularly, this is the case in connection with the manufacture of inner tubes of the smaller sizes, which are adapted to be used within bicycle and motorcycle tire casings. It is the practice to roll these tubes from a continuous strip of raw stock, and then to cut the ensuing continuous raw tube to the The extremities of these tubes are then to be subjected to a butt end vulcanization, e., one in which each end of the tube is closed tightly independently of the other end, such butt vulcanization takino' place, of course, only after the tube has been cured as a whole.

According to my invention it is possible to simultaneously vulcanize both ends of a tube, a plan having economic advantages over any method which proposes the vulcanization of the tube ends at intervals. For this reason ll arrange the press elements of my vulcanizing battery in pairs in order that each element of a pair may serve to cure one end of the same tube. Since, however, the thickness of the material in the tube itself frequently varies, l have arranged the pairs of presses so that the separate elements are individually, although simultaneously, operable. By providing a multiple press which contains a battery of paired press elements, the laborer is permitted to spend the lOl)l A single machine base suffices for the support of the entire battery of press vulcanizers. This machine base includes spaced standards 5 `which are cross-connected by channel beams 6, the latter being secured by suitable means 7 in spacedrelation to each other and serving to support a base plate 8. Upon this base plate is mounted a plurality of pressure chambers 9 which are fed with an operating fluid through the medium of pipes 10 arranged between the spaced beams 6, as is clearly shown in Fig. 3. The pressure chambers 9 are paired for simultaneous operation by connect each means of elbow joints 11 which pairs of adJacent pipes 10. From compound joint l1 there extends a sup ply pipe 12 through which the fluid of pressure is to be transmitted to be paired pres-l sure chambers 9 upon proper operation of the valve 13, which is located within the su'pply pipe 12 and at the intersection therewith -of feed pipes 14 and 15. The feed pipe presses of the vulcanizing battery.

v mediately pivoted depend from thechannel bar 23. The latter 'is supported upon are erected upon the base frames 5 and which The valves 13 are of the two-way type and so constructed that each is capable of affording communication between either of the eed pipes 14 and 15 and the main supply pipe of its respective pair' of presses while shutting offthe other feed pipe from the supply pipe. This type of valve is too well own to the art to require any specific illustration. A lever arm 18 is secured upon the protruding extremity of each valve stem and is connected by a vertical link 19 with the extremity of an operating lever 20, one of these levers being arranged for each pair of press'elements. The levers 20 are interupon the ears 22 which the standards 24 which also serve to support the fixed head 25 of the machine. t i

The bar 23 is apertured at intervals along 'ts length to serve asa guide for the pistons 26, the latter being operable within respective pressure chambers 9. Caps 27, provided with some suitable leak-preventin packing form closures for the upper ends o? sure chambers.

A movable press head 28 is carried yupon the extremity of each of the pistons 26, these press heads being formed hollow in order that steam may be conducted through a suitable duct within the supporting piston for the (purpose of heating the press head. The fixe press head 25is-also formed hollow and ,ing the the pres-y is adapted to be filled with live steam from a suitable feed pipe 29. A longitudinal partition 30 is erected interiorly of the hollow fixed head 25 and longitudinally thereof as a strengthening element, this partition being provided with apertures 31 at intervals along its length in order that free communication for the heating fluid may be established between' the two compartments provided by this partition. The temperatures within the fixed head may be gaged by means of the thermometer 32.

Each of the movable press heads 28 carries a shelf 33 secured by bracket means 34 to one side thereof, and upon this shelf may restthe end portions of the tube to be vulcanized. In Fig. 1 there is illustrated the vulcanization of both ends 35 and 36 of a single tube, and it will be apparent that each end is given a similar, but separate, vulcanization at the same time, so that any differences in the thickness of material in the different ends may be compensated for by different throws lor travels, on the part of the pair of press pistons. After loading the first pair of press elements, and moving the operating lever 2O to permit an ingress of the actuatingfluid into the pressure chambers 9 of this pair of elements, the operator may proceed to similarly load the remaining pairs of presses in succession, returning after the loading of the last pair of presses 4to. the first press for the removal of the tube whose butt ends have been vulcanized therein.

What I claim is: l 1. A multiple vulcanizing press having a plurality of press units, means for operatpress units in pairs, and means to control the operation of any pair of the press units at will.

2. In a multiple vulcanizing press, a battery of movable press elements arranged in pairs and a single fixed press head serving for all of said pairs.

3. In a multiple `vulcanizing press, a battery ofA movable press elements arranged in pairs; means for movlng press elements of each pair simultaneously, said means permitting varying relative movement of the press elements of each pair.

4. In a multiple vulcanizin press, a single fixed head; an inlet mani old; an outlet manifold; and separate press elements independently operable in pairs against said fixed head and connected in pairs to said manifolds.

5. In a multiple vulcanizing apparatus, a single fixed head; a single guide; inta-ke and exhaust manifolds; and separate press elements independently operable in pairs against saidfixed head and commonly controllable by said guide, the pairs of said ele-4 ments being connected to said manifolds.

6. In a vulcanizing press, .a plurality of separate press elements associated in pairs,

pendent vertical movement, means to operate the press elements in pairs at Will and a' fixed press head serving for all of said separate press elements.

l8. lln a vulcanizing press, a plurality of independently movable -press elements associated in pairs, and Huid-actuated means for v effecting at will simultaneous movement of anyl pair of the elements. l

9. lln a multiple vulcanzing press, a plurality of separate press elements, said elements being associated in pairs in such a manner that the time required for loading and unloading certain of the press elements maybe utilized for vulcanization of articles operated on by others of said elements, and

means for operating any pair of the elements at will.

l0. lA vulcanizing press having a pair of independent press elements, and means whereby the pair of press elements are simultaneously operable and capable of a differential movement with respect to each other Ain such a manner that both ends of an article to be cured, such as an inner tube, may be vulcanizing simultaneously, yet with such variations as may be necessitated by the differing requirements of the respective ends of the article. Y

' In testimony whereof l have signed my name in the presence of two subscribing Witnesses.

EDWARD NALL. Witnesses:

ANNA B. NALL, l I-LJ. GINTHER. 

